Irish (UK) general election, 1880

The party won 62 of the 103 Irish parliamentary seats, and a further 1 in the Irish-dominated city of Liverpool. 2 later defected to the Liberals. Parnell was presumed to have had the support of 25 of the MPs. When the Parliamentary Party reassembled in Westminster Parnell was elected session chairman of the party in place of William Shaw.

The IIP would not drop below the number of seats won in the 1880 election again until its electoral wipeout in the 1918 general election, when it experienced an electoral wipeout at the hands of Sinn Féin.